<template>
	<view>
		<!-- 使用自定义的搜索组件 -->
		<!-- <my-search :bgcolor="'lime'" :radius="3"></my-search> -->
		<my-search @click="gotoSearch"></my-search>
		<view class="scroll-view-container">
			<!-- 左侧的滑动区域 -->
			<scroll-view class="left-scroll-view" scroll-y="true" :style="{height: wh +'px'}">
				<block v-for="(item,i) in cateList" :key="i">
					<view :class="['left-scroll-view-item',i == active?'active':'']" @click="activeChanged(i)">
					{{item.cat_name}}
					</view>
				</block>
				
			</scroll-view>
			<!-- 右侧的活动区域 -->
			<scroll-view scroll-y="true" :style="{height: wh +'px'}" :scroll-top="scrollTop">
				<view class="cate-lv2" v-for="(item2,i2) in cateLevel2" :key="i2">
					<!-- 二级分类标题 -->
					<view class="cate-lv2-title">/{{item2.cat_name}}/</view>
					<!-- 当前二级分类下的三级分类列表 -->
					<view class="cate-lv3-list">
						<view class="cate-lv3-item" v-for="(item3,i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
							<!-- 三级分类图片 -->
							<image :src="item3.cat_icon.replace('ugo-dev','hmugo-web')"></image>
							<!-- 三级分类文本 -->
							<text>{{item3.cat_name}}</text>
						</view>
					</view>
				</view>
			</scroll-view>
		</view>
	
	</view>
</template>

<script>
	export default {
		data() {
			return {
				//当前设备可用的高度
				wh: 0,
				// 分类数据列表
				cateList: [],
				active: 0,
				cateLevel2:[],
				scrollTop: 0
			};
		},
		onLoad() {
			const sysInfo = uni.getSystemInfoSync()
			this.wh = sysInfo.windowHeight -50
			// 调用获取分类列表数据的方法
			this.getCateList();
		},
		methods:{
			async getCateList() {
			// 发起请求
				const { data: res } = await uni.$http.get('/api/public/v1/categories')
				// 判断是否获取失败
				if (res.meta.status !== 200) return uni.$showMsg()
				// 转存数据
				this.cateList = res.message
				// 为二级分类赋值
				this.cateLevel2 = res.message[0].children
			},
			activeChanged(i){
				this.active = i
				// 重新为二级分类赋值
				this.cateLevel2 = this.cateList[i].children
				this.scrollTop = this.scrollTop == 0 ? 1 :0
			},
			gotoGoodsList(item){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?cid='+item.cat_id
				})
			},
			gotoSearch(){
				uni.navigateTo({
					url:'/subpkg/search/search'
				})
			}
		}
	}
</script>

<style lang="scss">
	
.scroll-view-container{
	display: flex;
}
.left-scroll-view{
	width: 120px;
}
.left-scroll-view-item{
	background-color: #F7F7F7;
	line-height: 60px;
	text-align: center;
	font-size: 12px;
	
	&.active{
		background-color: #FFFFFF;
		position: relative;
		
		&::before{
			content: '';
			display: block;
			width: 3px;
			height: 30px;
			background-color: #C00000;
			position: absolute;
			top: 50%;
			left: 0;
			transform: translateY(-50%);
		}
	}
}
.cate-lv2-title{
	font-size: 12px;
	font-weight: bold;
	text-align: center;
	padding: 15px 0;
}
.cate-lv3-list{
	display: flex;
	flex-wrap: wrap;
	.cate-lv3-item{
		display: flex;
		width: 33.33%;
		flex-direction: column;
		align-items: center;
		margin-bottom: 10px;
		image{
			width: 60px;
			height: 60px;
		}
		text{
			font-size: 12px;
		}
	}
}
</style>
